Transformer for HP zr24w

[DENis_S]

Re: Transformer for HP zr24w

A TNY279 only cost a dollar or 2, so just replace it and you'll see if it is indeed the cause of your failure (I also bet it is).

Yes, it was it. All works fine after replacing of TNY279.
Thank U gratefully. U really helped me to save ZR24w. Your story of repair was the only that I had found.

Is that a common problem fo PSUs? I have the old TFT-TV with the same problem.

[momaka]

Re: Transformer for HP zr24w

Yes, it was it. All works fine after replacing of TNY279.
Thank U gratefully. U really helped me to save ZR24w. Your story of repair was the only that I had found.

Is that a common problem fo PSUs? I have the old TFT-TV with the same problem.

Good to hear you got it working.

No, usually those offline SMPS ICs are not a common problem. Most of the time it's the caps that go bad in LCD monitors, followed by the occasional rectifier... and of course, backlight issues (bad CCFLs, inverter transformers, inverter transistors, etc.). The offline SMPS ICs rarely go, but I suppose there could be some specific PSU models that have these particular issues. Now that there are two of you who encountered this particular issue with this monitor, it is quite possible many other zr24w monitors are like that.

[raph]

Re: Transformer for HP zr24w

Hi all. I just repaired my defective HP ZR24w by replacing the TNY279. Seems quite common with these displays. In my case, the TNY279 had actually exploded, ripping of the top part. Thank you for describing problem and solution so well.

[cuctimthanchet]

Re: Transformer for HP zr24w

hp zr 24w
exploded

[Paxancz]

Re: Transformer for HP zr24w

Please help,
i my case... TNY dead and rezistor R961 same and I dont know value or type ("burn"). Thanks for reply.

[budm]

Re: Transformer for HP zr24w

Please help,
i my case... TNY dead and rezistor R961 same and I dont know value or type ("burn"). Thanks for reply.

Show us the pictures of YOUR whole board, and the pictures of this R961 location.

[balobi]

Re: Transformer for HP zr24w

Hi,

can you please send me marking of IC I907?

thnx

i have the same issue with johnatan. blown IC 1907. what part number is that? thanks!

[lotas]

Re: Transformer for HP zr24w

i have the same issue with johnatan. Blown ic 1907. What part number is that? Thanks!

ic 1907 - tny279pn

[Arokiaraj]

Re: Transformer for HP zr24w

Yes, it was it. All works fine after replacing of TNY279.
Thank U gratefully. U really helped me to save ZR24w. Your story of repair was the only that I had found.

Is that a common problem fo PSUs? I have the old TFT-TV with the same problem.

Do you have schematics of this

[Arokiaraj]

Re: Transformer for HP zr24w

Good to hear you got it working.

No, usually those offline SMPS ICs are not a common problem. Most of the time it's the caps that go bad in LCD monitors, followed by the occasional rectifier... and of course, backlight issues (bad CCFLs, inverter transformers, inverter transistors, etc.). The offline SMPS ICs rarely go, but I suppose there could be some specific PSU models that have these particular issues. Now that there are two of you who encountered this particular issue with this monitor, it is quite possible many other zr24w monitors are like that.

I would appreciate if a schematic for this psu would be uploaded

[lotas]

Re: Transformer for HP zr24w

I would appreciate if a schematic for this psu would be uploaded

https://whatever.sdfa3.org/hp-zr24w-psu-repair.html

[wil92]

Re: Transformer for HP zr24w

I measured the power supply, 5V is ok, but 12 V and 19 V reads 0 V, just plain dead.

So i measured the caps and diodes, they are fine. So then I looked at one of the transformers, the resistance between the conductors on the secondary is 0.2 ohm, so short circuit.

How do I find a replacement transformer, I really don't understand the markings.

I know this is an old post, but I'm looking for the schematics of the zr24w power supply, if someone can help me it will be very appreciated.